KP Jones, DJ Wall - US Patent 6,208,441, 2001 - Google Patents
An optical-wavelength division multiplexing System, method and branching unit. The arrangement drops one, or more than one, predetermined wavelength signal (0, 2) from a …
D Uehara - US Patent 6,256,125, 2001 - Google Patents
(57) ABSTRACT A wavelength division multiplexing (WDM) optical trans mission System includes a node having a wavelength de multiplexer, an optical Switch connected to the …
H Mueller - US Patent 6,198,721, 2001 - Google Patents
A method and system for data transmission in a 2-fiber ring network having a plurality of network nodes wherein working signals are bidirectionally transmitted between terminal …
D Uehara - US Patent 6,320,684, 2001 - Google Patents
A wavelength division multiplexing (WDM) optical transmission system includes a node having a wavelength-demultiplexer, an optical switch connected to the demultiplexer, a …
H Fevrier, L Berthelon, C Coeurjolly, A Noury… - US Patent …, 2001 - Google Patents
An extract-and-insert optical wavelength division multi plexer includes a broadcaster (D1) for applying an incoming multiplex signal to N outputs, a combiner-diffuser (D2) for …